301 redirection

[Mistaismyfav]

Hello everyone, my website named X has been blocked by the BTK. When I checked its status with Ahrefs, the domain authority was 16. I have created a new site. I am currently ranking 7th for the keywords, but my competitors above me have domain authorities ranging from 5 to 10. The server files of my banned site X are not available. I rebuilt this site using a VPN. My question for you is: Is it more suitable to fill the content of this X site with articles, install AMP, and focus on mobile accessibility, or should I set up a 301 redirect from the domain control panel to the new site I created? (Does it have a high impact on ranking?) Would it be better to create a link from the footer and articles of the well-constructed X site to the new site? And is loading backlinks, hacklinks, etc., onto the banned domain to boost the power for other sites a good strategy?